Method and apparatus for cleansing articles of refuse tinware and for the recovery of solder therefrom.



. J. W. EVANS. METHOD AND APPARATUS FOR CLEANSING ARTICLES 0F REFUSE TINWARE AND FOR THE RECOVERY OF SOLDER THEREPROM.

APPLICATION FILED NOV. 25. 1908.

Patented Sept. 28, 1909.

, UNITED in JOHN WILLIAM EVANS, OF CARGO FLEET, a

Specification of Letter ENGLAND.

I, UG-H,

uen- EDINW'ARE AND FQR cut. 28, litltltl.

Application filed November 25, serial 3P0. a e-1 1.

To all whom it may concern:

Be it known that LJUHN WILLIAM Evans, of the Iron & Steel Foundry, Cargo Fleet, Middlesbrough, a subject of the l ling oi Great Britain and Ireland, residing at Cargo i ,3 Fleet, Middlesbrougli, England, have invented certain new and useful Improve rents in the Method'ot' and Apparatus for C-leansg iug Articles of Refuse 'iinware and for the Recovery of Solder Therefrom; and I do hereby declare the following to be a tall, j

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This inventlon relates to the method of and apparatus for the treatment of refuse tin ware, by which the thin steel plate of solder is applied.

Having thus ind-iciited the nature and utility of my invention, in order that it may be clearly understood and readily car ied into effect, I will proceed to describe the same, and for that purpose shall refer to the drawing annexed to this specification, which illustrates in longitudinal sectional elevation a convenient form of apparatus for the purposes of my invention.

Such an apparatus consists as follows:.er

revolving cylindrical chamber a occupying an approximately horizontal position is furnished with a hopper b at one end, a chute c at the other end, and a spiral blade or worm d inside; these parts being so adapted to each other in their relative positions and capacities that the refuse articles of tin were charged into the hopper Z) are conveyed by the spiral blade or Worm d through the cylindrical chamber a to the chute 0 where they accumulate and from which they are discharged from time to time by Withdrawing the slide 1/, to be received into wagons, trucks or otherwise disposed of as suitable material for rte-melting purposes. The cylindrical hamber a is iucloscd within an outer chamzonnunni ates therewith by per the outer ui the heat in the es rich in carbon n supplied from the purpose are chamber raising its heat, or the temalder adhering to the Manly to be separated d is adapted by the A al or blade to subject the tin ware to a continual tumbling about, and this in conjunctimi with the heat and pres-' ence of carbon separates the solder, dirt and from the steel plate of which the articles under treatment are made. The mixture of solder, dirt and oxid of iron is r 'ed through the perforations o in the cylinder bottoi'n into a water bosh or tank 9 below, which water bosh is furnished with inflow and outi pipes y g" respectively, by Whitln the suriace of the water is kept in a cor-taut flow to wash away the dirt, leaving the :iearier materials to fall to the water bosh where they conof solder and oxid of iron ate This isralted out 'ouglr an opening or or drying by the ap- L subjected to magnetism in any convenient can of apparatus by which end of iron is retained, while the particles of solder are passed on and collected for use.

lleoween the inner and outer chambers are provided rollers 5 at each end which bear against surface rings 3' fixed on the inner el'iaiubei he ends the outer chamber being inc 4 rings is. T he cylinder a is dri en gearing such as a circular ra h gears a pinion m d loose pulleys n a from 3 motor. The spiral oerforat-ed is pitched or heat is blade i amber being lined an suitable for the purpose,

say a 2 aetween the diameter and pitci. or

i am 5 been pro ose'd to A iaon cylinders, cosed in at both ends, into or tlirough which heated non-oxidiz' sesare passed, and provided with JQ-lidl'tli"-d Walls for the escape of theselder, prov for treating a1 ticlcs oi refuse bill ware for the removal and in the manner already known, but'in, my

invention the tin ware is continuously passed through a cylindrical chamber open at both ends and rotating in an approximately horizontal position the said chamber being heated by products of comlmstion received from a furnace and rich in carbon so as to be siibstiantially free from oxygen. Likewise in my a 'iparatus this chamber is 't'urnished with a spiral blade or \vorm by which the articles under treati'i'ient are prevented from clogging by being tumbled about. as they are driven forward to a discharging chute after being stripped of soldt. and other zulhering material which has been dislodged by me chanical agitation aided by the heated products oit' UOlDbt. ion. This solder and other inaterial so detached passes through peritorations in the cylinder shell directly into a tank oi water for treatment by "ashing and after I'GllltF/fllfjllf)! drying by the application of heat finally sub ected to .uiagnetism for the elimination of the oxid of iron; from the solder; it being understood that the treatment of the solder and oxid mixture may not always form part of the detinning process. 1 I

Having thus described my invention, what I claim and desire to secure by Letters Patentv 01"" the United States is 1. ihc process oftreatingrefuse tin ware;

which consists in continuously feedingthe same to a ri'itatmg chamber; in continuously forcing into said chamber products of combustion at a tempe'ature sulticient to melt solder,- rich in carbon and substantially free from oxygen; in continuously causing said ware to be tumbled about in said chamber so as to mechanically dislodge the melted solder and other material adhering thereto;

in permitting said disloged solder and other material topass out of said chamber into a suitable vessel containing water by which the solder and oxid of iron is separated from the lightermaterial; in removing said solder and iron oxid from said vessel; drying the same; and finally subjecting the nne to the action of magnetism, substantially as described.

2. In an apparatus for recovering the metal in ret'use tin ware, the combinationof a perforated chamber open at both ends; means for continuously rotating the same;

means for continuoi'isly feeding tin were to said chamber; a spiral blade in said chamber for causing the tin ware to be continuously agitated; channel through which heated gases rich in carbon and poor in oxygen may be fed to said chamber; an outer casing for said chamber; and a watert-ank below the same provided with an opening through which solder and sludge maybe withdrawn,

substantially as described.

.In testimony whereof, I atlix my signature, in presence of two witnesses.

. JOHN XVILLIAM EVANS.

Witnesses: I

HENRY P. A'luinson, Ti-ionas- (hum. 

